149458109 has 2 divisors, whose sum is σ = 149458110. Its totient is φ = 149458108.

The previous prime is 149458091. The next prime is 149458147. The reversal of 149458109 is 901854941.

149458109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (149458091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85618009 + 63840100 = 9253^2 + 7990^2 .

It is a cyclic number.

It is not a de Polignac number, because 149458109 - 2⁸ = 149457853 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149458609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74729054 + 74729055.

It is an arithmetic number, because the mean of its divisors is an integer number (74729055).

Almost surely, 2^149458109 is an apocalyptic number.

It is an amenable number.

149458109 is a deficient number, since it is larger than the sum of its proper divisors (1).

149458109 is an equidigital number, since it uses as much as digits as its factorization.

149458109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 149458109 is about 12225.3060902376. The cubic root of 149458109 is about 530.6886846538.

The spelling of 149458109 in words is "one hundred forty-nine million, four hundred fifty-eight thousand, one hundred nine".